Manuals / Acer / Computer Equipment / Laptop

Acer 521 manual Chapter

Models: 521

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Specifications System Block Diagram Bluetooth Password Euro symbol Indicators Wireless LAN Warranty Dimension Common Problems

Page 110

5.Connect the LVDS cable to the mainboard and fold over the mylar to secure the connector.

6.Connect and lock the touchpad FFC.

100

Chapter 3

Page 109 Page 111

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Acer 521 manual Chapter

Page 109 Page 111

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Contents

Aspire one 521 Series Service Guide Revision History Copyright Conventions Preface Page Table of Contents 111 AO521 Table of Contents Features Chapter Optical Media Drive Storage subsystemAudio subsystem Communication Accessories Dimensions and WeightPower Adapter and Battery Special Keys and Controls Warranty Environment System Block Diagram AMD ASB2 CPU Top View Icon Description Closed Front View Left View Right View Icon Function Description IndicatorsBase View TouchPad Basics Function Left Button Right Button Main TouchPad Lock Keys and embedded numeric keypad Using the KeyboardDesired access Num Lock on Num Lock off Lock key Description Windows Keys Key Description Hot Keys Hotkey Icon Function Description US dollar sign Euro symbolSpecial Keys Processor Specifications Hardware Specifications and ConfigurationsProcessor Specification North Bridge Chipset Specification Setup of 2D polygons and lines Item NB Specification Item NB Specification Normal operation Item NB Specification Southbridge Chipset Specification Item SB Specification System Memory Specification USB Hard Disk Drive Interface Specification LCD Specification Bluetooth Specification Lvds Keyboard Specification Audio Codec and Amplifier SpecificationLAN Interface Specification Media Card Reader Specification Wireless LAN Specification Battery Specification Cell Interface Specifications Bios Setup Utility Navigating the Bios Utility Information Parameter Description Main Parameter Description Format/Option Security Setting a PasswordDisabled or Parameter Description Option Enter New Password Removing a Password Changing a Password Continue Boot Information Main Security Boot Exit Exit Exit Exit Saving Changes Bios Flash Utility DOS Flash Utility Page WinFlash Utility Select Enter Unlock Password and press Enter Remove HDD/BIOS Password UtilitiesRemove HDD Password Removing Bios Passwords Miscellaneous Utilities Using Boot Sequence SelectorUsing DMITools Using the LAN MAC Utility Example 1 Read DMI Information from Memory Related Information Disassembly RequirementsReplacement Requirements Pre-disassembly Instructions Disassembly Process Main Screw List Quantity Acer Part Number Screw List Step Quantity External Module Disassembly ProcessExternal Modules Disassembly Flowchart Removing the Battery Pack Removing the Dummy Card Removing the Base Door Step Screw Quantity Screw Type Removing the Dimm Module Removing the Hard Disk Drive Module Chapter Step Screw Quantity Screw Type Removing the Wlan Module Pull the Wlan module out and away Chapter Step Screw Quantity Screw Type 3G Module Disassembly Removing the 3G Module Pull the 3Gmodule out and away Chapter Main Unit Disassembly Process Main Unit Disassembly Flowchart Step Screw Quantity Removing the Keyboard Page Removing the Upper Cover Remove the seventeen 17 screws in the upper cover Chapter Removing the Touchpad Board Removing the Bluetooth Module Removing the LCD Module Remove two 2 screws from the hinge Removing the Mainboard Chapter Removing the Thermal Module Lift the thermal module away from the main board Step Screw Quantity Screw Type Speaker Disassembly Removing the Speakers Lift the speakers clear of the lower cover LCD Module Disassembly Process LCD Module Disassembly Flowchart Removing the LCD Bezel Step Screw Quantity Screw Type Remove LCD Bezel M2.5*4Page Removing the Camera Board Removing the LCD Panel Step Screw Quantity Screw Type Remove LCD Panel M2x3 Chapter Removing the LCD Cover Hinges LCD Reassembly Procedure Replacing the LCD Cover Hinges Replacing the LCD FPC Cable Step Screw Quantity Screw Type LCD Panel Assembly Replacing the LCD Panel Replacing the Camera Board Replacing the LCD Bezel Step Screw Quantity Screw Type Replace LCD Bezel M2.5*4 Main Unit Reassembly Process Replacing the SpeakersPage Replacing the Thermal Module Replacing the Mainboard Replacing the LCD Module M2.5x5 Place the Lvds cable in the hinge channel as shown Chapter Replacing the Bluetooth Module Replacing the Touchpad Board Replacing the Upper Cover Step Size Quantity Screw Type 100 Chapter Replacing the Keyboard Replacing the Hard Disk Drive Page Replacing the Dimm Module Replacing the 3G Module Replacing the Wireless LAN Module Connect the two 2 Wlan antennas Chapter 107 Replacing the Base Door Replace the Dummy Card Replacing the Battery 110 Chapter Common Problems Symptoms Verified Go To Power On Issue Computer Shuts down Intermittently No Display Issue No Post or Video Random Loss of Bios Settings Abnormal Video Display LCD Failure Built-In Keyboard Failure TouchPad Failure Sound Problems Internal Speaker Failure Internal Microphone Failure Microphone ProblemsSelect Set up microphone Select Repair your computer HDD Not Operating CorrectlyOther Failures Select Startup Repair Intermittent Problems Undetermined Problems Code Beeps Post Routine Description Post Code Reference TablesPost Code Range Post Routine Description Code Beeps Post Routine Description 124 Chapter Code Beeps For Boot Block in Flash ROM 126 Chapter Jumper and Connector Locations Mainboard Top View Mainboard Bottom View Bios Recovery Boot Block Bios RecoveryBios Recovery by Crisis Disk Bios Recovery Hotkey 130 Chapter Exploded Diagrams FRU Field Replaceable Unit List Main Assembly Description Part Number Chapter 133 LCD Assembly FRU List Category Description Adapter Category Description Category Description LCD Module Screw List Mainboard Model Definition and Configuration Appendix a AO521 Model Acer Part No Country Description TWN Gctwn AO521 LU.SBS0D.056 AO521 LU.SBS0D.041 AO521 LU.SBS0D.024 AO521 LU.SBS0D.007 Model Acer Part No Memory Chip AO521 LU.SBT0D.007 105Hk 05B AO521 LU.SBS0D.030 AAK32 1GB 2GB Model Acer Part No MemoryMedia Processor 152 N250G 105Dk B5.4KS AO521 154 HDD ODD Media Processor 1GB 2GB AO521-12BHk 158 Appendix B Keyboard Modem Type Description NB Chipset WiFi AntennaWireless LAN SB Chipset 162 Online Support Information Appendix C 164 Index Block Diagram 167

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